CN107435293A - Pre-stress FRP bar stretching and anchoring device and its construction method for precast assembly bridge pier - Google Patents
Pre-stress FRP bar stretching and anchoring device and its construction method for precast assembly bridge pier Download PDFInfo
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- CN107435293A CN107435293A CN201710546511.7A CN201710546511A CN107435293A CN 107435293 A CN107435293 A CN 107435293A CN 201710546511 A CN201710546511 A CN 201710546511A CN 107435293 A CN107435293 A CN 107435293A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of pre-stress FRP bar stretching and anchoring device and its construction method for precast assembly bridge pier, anchor include being arranged on cushion cap and coxopodite section seam crossing " ［ " type groove, be arranged on " anchor plate in ［ " type groove, the stretching end sleeve being fixed on by stop nut on anchor plate, by backing plate of the Boards wall on stretching end sleeve, the jack being placed on backing plate, the anchored end sleeve being embedded in pier stud section, the prestressed FRP rebar being arranged between stretching end sleeve and anchored end sleeve.Tension operation can be carried out to FRP tendons in bridge pier bottom using the present invention and securely be anchored in FRP tendons in pier, while the loss of prestress situation of FRP tendons can also be inspected periodically and mended in time and opened.
Description
Technical field
The invention belongs to civil engineering, architectural engineering, highway engineering and municipal works field, is related to one kind and is used for prefabricated spelling
Fill the pre-stress FRP bar stretching and anchoring device and its construction method of bridge pier.
Background technology
Section assembling precast concrete bridge pier has construction quick, reliable in quality, affected by environment small, small to traffic impact
The advantages that, in the even island bridge over strait of some including Construction of Hangzhou Bay Cross-sea Bridge and U.S. Seven Miles Bridge
Engineer applied is arrived.The bridge pier of this form is that pier shaft is vertically divided into some sections, is connected between section using stem grafting seam
Connect, because the presence of seam causes that precast assembly bridge pier globality is poor, self-resetting capability is poor under geological process, to improve
Its globality and self-resetting capability, existing way are to set presstressed reinforcing steel along pier shaft direction.
Traditional prestressed material is mostly reinforcing bar and steel strand wires etc., and more and more common background is applied in prestressing technique
Under, correspondingly also there are some problems, distinct issues the most are steel poor durabilities.FRP tendons have that tensile strength is big, ratio
The advantages that intensity is high, rotproofness is good, its appearance and its popularization and application in field of civil engineering, are greatly broadened prestressing force skill
The selection range of art.Although having carried out a large amount of correlative studys both at home and abroad, it is low, not pliable to there is shear strength yet with FRP tendons
The deficiencies of folding, traditional tensioning, anchor are not particularly suited for prestressed FRP rebar, this greatly limits FRP tendons in prestressing force
The application in field.Therefore, further prestressed stretch-draw, the anchorage technology of research FRP tendons are particularly important.
In Publication No. CN105178515A patent document, a kind of built-in anchorage formula prestressed FRP rebar is disclosed
Anchor, including prestressed FRP rebar, binding material, steel sleeve, screw rod, nut, annular steel plate washer and circular anchor ring are drawn, in advance
The both ends of stress FRP tendons are inserted in the openend of the steel sleeve at stretching end and anchored end, and consolidated with binding material respectively
Fixed, the blind end of the steel sleeve at stretching end welds one section of screw rod, makes screw rod through the ring wall of the circular anchor ring of stretching end, and
Installation and screw rod supporting annular steel plate washer and nut in circular anchor ring, anchoring is passed through by the blind end of the steel sleeve of anchored end
The ring wall of the circular anchor ring at end, and be connected together with doughnut boxing.The invention only relates to the anchor measure of prestressed FRP rebar,
Tensioning equipment and method are not referred to.
In Publication No. CN204357005U patent document, pre-stress FRP bar stretching and anchoring device is disclosed, the dress
The tensioning equipment for being divided into anchor sum is put, wherein anchor includes sleeve, stop nut and anchor plate, and tensioning equipment includes
Tension rod, counter-force spike and force applying device, the force applying device of the patent are connected with counter-force spike, and counter-force spike is arranged on anchor plate
On, counter-force spike is arranged on the outside of anchor plate with force applying device, and the present invention is by setting " ［ " type groove, backing plate and clamping plate
By force applying device（Jack）Be placed on the inside of anchor plate, such design can by the anchored end of prestressed FRP rebar as far as possible to
Outer extension, under conditions of construction space is limited, add prestress application length.
In summary, in existing open source literature, there is not yet the prestressed FRP rebar suitable for precast assembly bridge pier bottom
Draw, anchor.
The content of the invention
Technical problem：The present invention provides a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier, utilizes
The present invention can carry out tension operation to FRP tendons in bridge pier bottom and securely be anchored in FRP tendons in pier, while can also determine
Phase, which checks the loss of prestress situation of FRP tendons and mended in time, opens.
Technical scheme：
A kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier, including it is arranged on cushion cap and bottom pier stud
Rectangle cavity at the bottom seam of section, the anchor plate being horizontally installed in rectangle cavity（2）With anchor plate（2）Fix and locate
In the stretching end sleeve in rectangle cavity（4）, pass through clamping plate（5）It is fixed on stretching end sleeve（4）On backing plate（6）, can
It is placed in backing plate（6）On jack（7）, the anchored end sleeve that is embedded in pier stud section（8）, be arranged on stretching end sleeve
（4）With anchored end sleeve（8）Between prestressed FRP rebar（9）；
Rectangle cavity by cushion cap " ［ " type groove and pier stud section bottom " ［ " type groove is spliced；
Stretching end sleeve, jack are axially arranged each along pier stud section.
As a further improvement on the present invention, the rectangle cavity have three, be circumferentially uniformly arranged on cushion cap with
At the bottom seam of pier stud section.
As a further improvement on the present invention, the stretching end sleeve（4）Pass through stop nut（3）It is fixed on anchor plate
On, stretching end sleeve（4）Inside is provided with cone tank（10）, lower end be provided with stock inlet（11）, upper end be provided with grout outlet（12）And FRP
Muscle preformed hole（13）, side is carved with and stop nut（3）The screw thread being adapted, prestressed FRP rebar（9）Pass through preformed hole（13）Insert
Enter stretching end sleeve（4）Interior, binding material passes through stock inlet（11）Pour into stretching end sleeve（4）Cone tank（10）.
As a further improvement on the present invention, the anchored end sleeve（8）It is embedded in pier stud section, anchored end sleeve
（8）Inside is provided with cone tank（10）, lower end is provided with FRP tendons preformed hole（13）, side lower be provided with pulp-inlet pipe（14）, side surface upper part
Provided with grout outlet（15）, side be carved with screw thread, pulp-inlet pipe（14）With grout outlet（15）It extend out to beyond pier stud section, prestressing force
FRP tendons（9）Pass through preformed hole（13）Insert stretching end sleeve（8）Interior, binding material passes through pulp-inlet pipe（14）Pour into anchored end set
Cylinder（8）Cone tank（10）.
As a further improvement on the present invention, the prestressed FRP rebar（9）Using carbon fibre bar, basalt fiber tendons, virtue
Synthetic fibre fiber bar or glass fiber-reinforced polymer, its cross sectional shape are circular, square or rectangle, prestressed FRP rebar（9）Lower end and stretching end set
Cylinder（4）It is connected as a single entity, upper end and anchored end sleeve（8）It is connected as a single entity, upper and lower end surface is carried out slightly with the method for sandblasting or grinding
Rough processing.
As a further improvement on the present invention, the clamping plate（5）It is divided into strap（16）With free clamping plate（17）, it is fixed
Clamping plate（16）It is welded on backing plate（6）Lower surface, free clamping plate（17）Pass through bolt（18）With strap（16）By stretching end
Sleeve（4）Clamp.
As a further improvement on the present invention, the backing plate（6）Upper surface is used for laying jack（7）, lower surface passes through
Clamping plate（5）With stretching end sleeve（4）It is connected, as transition apparatus by jack（7）Thrust pass to stretching end sleeve（4）Enter
And pass to FRP tendons（9）, backing plate is provided with spirit level（19）And sleeve channel（20）.
Another technical purpose of the present invention is to provide a kind of prestressed FRP rebar stretch-draw anchor for precast assembly bridge pier and filled
The construction method put, comprises the following steps：
Step 1, prefabricated cushion cap, pier stud section
Pier stud section has some sections, and the bottom of the pier stud section in bottom has " ［ " type groove, the pier in the top
Pre-buried anchored end sleeve in post section；
Cushion cap upper end has " ［ " type groove；
On cushion cap " ［ " type groove and pier stud section bottom " ［ " type groove can be spliced to form rectangle cavity；
Anchor plate is laterally set in rectangle cavity, stretching end sleeve is fixed in the top of anchor plate using stop nut；
Each pier stud section is provided with the FRP tendons preformed hole passed through for FRP tendons；
Step 2：Installation platform, lifting pier stud section
First the pier stud section below anchored end sleeve is lifted into above cushion cap successively, then penetrated FRP tendons successively from top
The FRP tendons preformed hole of each pier stud section, until after penetrating rectangle cavity, pier stud section of the lifting with anchored end sleeve；
Step 3：By FRP tendons upper end insertion anchored end sleeve, lower end insertion stretching end sleeve, binding material is filled by grout pipe
Enter anchored end sleeve until grout outlet have binding material outflow, by binding material by the mouth pipe that is in the milk pour into stretching end sleeve until
Grout outlet has binding material outflow, and binding material is epoxy resin or acrylic resin；
Step 4：Backing plate is clamped on stretching end sleeve using clamping plate, the bolt on clamping plate need to be tightened, the spirit level on backing plate
Level need to be shown；
Step 5：Jack is placed on backing plate, jack apply thrust by backing plate pass to stretching end sleeve and then
FRP tendons are passed to, " top surface of rectangle cavity provides counter-force support, stretch-draw prestressing force to design load for jack；
Step 6：Stretching end sleeve is fixed on anchor plate using stop nut, takes out jack, unclamps bolt on clamping plate simultaneously
Clamping plate, backing plate are taken out, " ［ " type fluted external surface carries out temporary enclosed；So far the stretch-draw anchor operation knot of prestressed FRP rebar
Beam.
Using the present invention, workmen can in precast assembly bridge pier bottom stretch-draw prestressing force FRP tendons, while conserve personnel can
Inspect periodically the loss of prestress situation of FRP tendons and mend in time and open.
Beneficial effect：The present invention has advantages below than prior art：
1. can be in precast assembly bridge pier bottom stretch-draw prestressing force FRP tendons
In Publication No. CN103590324A patent document, disclose transverse shear resisting section type self-resetting pier and its apply
Work method, the bridge pier include horizontal shearing resistance pier bottom section, multiple horizontal shearing resistance pier shaft sections and horizontal shearing resistance pier top section, also wrapped
Include the Self-resetting component for running through and being anchored in coxopodite section, pier shaft section and epimerite section by reserving hole channel, the Self-resetting component
Using post-stretching no-cohesive prestressed reinforcement, high-strength pull bar or FRP lacing wires.The tensioning of the invention presstressed reinforcing steel need to be in pier top section
Carry out, and after bent cap and Superstructure Construction, the anchored end of presstressed reinforcing steel is covered, mends and opens after prestressing force loses
It is very difficult.
In Publication No. CN104674649A patent document, a kind of novel thin wall hollow bridge pier seismic Damage is disclosed
Control system, the invention include：Bridge pier base, it is arranged at the Thin-wall Hollow Pier of bridge pier base upper surface, high-tenacity fiber enhancing
Cement-base composite material enlarged cross section, unbonded prestressing tendon and steel power consumption part, unbonded prestressing tendon lower anchor is in bridge pier
Base, upper anchorage provide the runback after bridge pier shake in the center of first steel power consumption part from the bottom to top, unbonded prestressing tendon
Capability.The upper anchorage of the invention unbonded prestressing tendon is inside Thin-wall Hollow Pier, unless by structure more than anchored end
Remove, otherwise can not carry out prestressing force benefit.
To sum up, there is not yet carrying out the dress of tension of prestressed tendon anchoring in precast assembly bridge pier pier bottom in existing patent document
Put, tensioning equipment of the present invention be arranged on pier bottom " in ［ " type groove, workmen can be in ground stretch-draw prestressing force FRP tendons, nothing
Support, haulage equipment need to be set up, it is not only safe but also economical.
Opened 2. the loss of prestress situation of FRP tendons can be inspected periodically and mended in time
In the patent document of foregoing Publication No. CN103590324A, CN104674649A, the anchored end of presstressed reinforcing steel is upper
Portion's structure construction is all covered afterwards, not the detection for presstressed reinforcing steel and benefit Zhang Liuyou operating spaces.And due to concrete bullet
Property contraction, concrete shrinkage and creep, relaxation of steel, anchor deformation, seam compression etc. reason, loss of prestress can hardly be avoided,
Just the globality and self-resetting capability of precast assembly bridge pier can not be ensured after presstressed reinforcing steel loss prestressing force, this is for prefabricated spelling
It is breakneck to fill bridge pier.
The present invention is in pier bottom provided with " ［ " type groove, stretching and anchoring device is placed in " in ［ " type groove, to be set using this
Meter maintenance personnel, which can inspect periodically the loss of prestress situation of FRP tendons and mend in time, to open, and it is convenient to be provided for follow-up management maintenance.
Brief description of the drawings
Fig. 1 is construction shaft side figure of the embodiment of the present invention；
Fig. 2 is stretching end sleeve sectional view of the embodiment of the present invention；
Fig. 3 is anchored end sleeve sectional view of the embodiment of the present invention；
Fig. 4 is clamping plate of the embodiment of the present invention, backing plate axonometric drawing；
Label declaration in figure：1- " ［ " type groove, 2- anchor plates, 3 stop nuts, 4- stretching ends sleeve, 5- clamping plates, 6- backing plates, 7-
Jack, 8- anchored ends sleeve, 9- prestressed FRP rebars, 10- cone tanks, 11- stock inlets, 12- grout outlets, 13- preformed holes, 14-
Pulp-inlet pipe, 15- grout outlets, 16- straps, the free clamping plates of 17-, 18- bolts, 19- spirit levels, 20- sleeve channels.
Embodiment
With reference to embodiment and Figure of description, the present invention is further illustrated.The present invention is a kind of for prefabricated
The pre-stress FRP bar stretching and anchoring device of assembled bridge pier, including it is arranged on " ［ " type groove 1, setting for cushion cap and coxopodite section seam crossing
Put " anchor plate 2 in ［ " type groove 1, the stretching end sleeve 4 being fixed on by stop nut 3 on anchor plate 2, by clamping plate 5
The backing plate 6 that is fixed on stretching end sleeve 4, the jack 7 being placed on backing plate 6, the anchored end set being embedded in pier stud section
Cylinder 8, the prestressed FRP rebar 9 being arranged between stretching end sleeve 4 and anchored end sleeve 8.
Precast Pier Columns section can be that hollow pier can also be solid pier, and section form can be circular, rectangle or pros
Shape.Now illustrated by taking the implementation of the solid pier stud of circular cross-section as an example：
A kind of construction method of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier, comprises the following steps：
Step 1, prefabricated cushion cap, pier stud section
Pier stud section has some sections, and the bottom of the pier stud section in bottom has " ［ " type groove, the pier in the top
Pre-buried anchored end sleeve in post section；
Cushion cap upper end has " ［ " type groove；
On cushion cap " ［ " type groove and pier stud section bottom " ［ " type groove can be spliced to form rectangle cavity；
Anchor plate is laterally set in rectangle cavity, stretching end sleeve is fixed in the top of anchor plate using stop nut；
Each pier stud section is provided with the FRP tendons preformed hole passed through for FRP tendons；
Step 2：Installation platform, lifting pier stud section
First the pier stud section below anchored end sleeve is lifted into above cushion cap successively, then penetrated FRP tendons successively from top
The FRP tendons preformed hole of each pier stud section, until after penetrating rectangle cavity, pier stud section of the lifting with anchored end sleeve；
Step 3：By FRP tendons upper end insertion anchored end sleeve, lower end insertion stretching end sleeve, binding material is filled by grout pipe
Enter anchored end sleeve until grout outlet have binding material outflow, by binding material by the mouth pipe that is in the milk pour into stretching end sleeve until
Grout outlet has binding material outflow, and binding material is epoxy resin or acrylic resin；
Step 4：Backing plate is clamped on stretching end sleeve using clamping plate, the bolt on clamping plate need to be tightened, the spirit level on backing plate
Level need to be shown；
Step 5：Jack is placed on backing plate, jack apply thrust by backing plate pass to stretching end sleeve and then
FRP tendons are passed to, " top surface of rectangle cavity provides counter-force support, stretch-draw prestressing force to design load for jack；
Step 6：Stretching end sleeve is fixed on anchor plate using stop nut, takes out jack, unclamps bolt on clamping plate simultaneously
Clamping plate, backing plate are taken out, " ［ " type fluted external surface carries out temporary enclosed；So far the stretch-draw anchor operation knot of prestressed FRP rebar
Beam.
By above-mentioned construction method, anchor of the present invention can be obtained.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and equivalent substitution can also be made, these are to the present invention
Claim be improved with the technical scheme after equivalent substitution, each fall within protection scope of the present invention.
Claims (8)
1. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier, it is characterised in that including being arranged on cushion cap
With the rectangle cavity at the bottom seam of bottom pier stud section, the anchor plate being horizontally installed in rectangle cavity（2）With anchor plate
（2）The stretching end sleeve fixed and be in rectangle cavity（4）, pass through clamping plate（5）It is fixed on stretching end sleeve（4）On backing plate
（6）, backing plate can be placed in（6）On jack（7）, the anchored end sleeve that is embedded in pier stud section（8）, be arranged on tensioning
Hold sleeve（4）With anchored end sleeve（8）Between prestressed FRP rebar（9）；
Rectangle cavity by cushion cap " ［ " type groove and pier stud section bottom " ［ " type groove is spliced；
Stretching end sleeve, jack are axially arranged each along pier stud section.
2. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, described " rectangle cavity has three, is circumferentially uniformly arranged at cushion cap and pier stud section bottom seam.
3. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, the stretching end sleeve（4）Pass through stop nut（3）It is fixed on anchor plate, stretching end sleeve（4）Inside is provided with taper
Groove（10）, lower end be provided with stock inlet（11）, upper end be provided with grout outlet（12）And FRP tendons preformed hole（13）, side be carved with it is spacing
Nut（3）The screw thread being adapted, prestressed FRP rebar（9）Pass through preformed hole（13）Insert stretching end sleeve（4）It is interior, binding material
Pass through stock inlet（11）Pour into stretching end sleeve（4）Cone tank（10）.
4. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, the anchored end sleeve（8）It is embedded in pier stud section, anchored end sleeve（8）Inside is provided with cone tank（10）, lower end is set
There is FRP tendons preformed hole（13）, side lower be provided with pulp-inlet pipe（14）, side surface upper part be provided with grout outlet（15）, side be carved with screw thread,
Pulp-inlet pipe（14）With grout outlet（15）It extend out to beyond pier stud section, prestressed FRP rebar（9）Pass through preformed hole（13）Insertion
Pull end sleeve（8）Interior, binding material passes through pulp-inlet pipe（14）Pour into anchored end sleeve（8）Cone tank（10）.
5. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, the prestressed FRP rebar（9）Using carbon fibre bar, basalt fiber tendons, aramid fiber reinforced plastic barses or glass fiber-reinforced polymer, its section
Face is shaped as circular, square or rectangle, prestressed FRP rebar（9）Lower end and stretching end sleeve（4）It is connected as a single entity, upper end and anchoring
Hold sleeve（8）It is connected as a single entity, upper and lower end surface carries out coarse processing with the method for sandblasting or grinding.
6. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, the clamping plate（5）It is divided into strap（16）With free clamping plate（17）, strap（16）It is welded on backing plate（6）Under
Surface, free clamping plate（17）Pass through bolt（18）With strap（16）By stretching end sleeve（4）Clamp.
7. a kind of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier according to claim 1, its feature
It is, the backing plate（6）Upper surface is used for laying jack（7）, lower surface pass through clamping plate（5）With stretching end sleeve（4）It is connected,
As transition apparatus by jack（7）Thrust pass to stretching end sleeve（4）And then pass to FRP tendons（9）, backing plate is provided with
Spirit level（19）And sleeve channel（20）.
A kind of 8. construction method of pre-stress FRP bar stretching and anchoring device for precast assembly bridge pier, it is characterised in that including
Following steps：
Step 1, prefabricated cushion cap, pier stud section
Pier stud section has some sections, and the bottom of the pier stud section in bottom has " ［ " type groove, the pier in the top
Pre-buried anchored end sleeve in post section；
Cushion cap upper end has " ［ " type groove；
On cushion cap " ［ " type groove and pier stud section bottom " ［ " type groove can be spliced to form rectangle cavity；
Anchor plate is laterally set in rectangle cavity, stretching end sleeve is fixed in the top of anchor plate using stop nut；
Pier stud section below anchored end sleeve is provided with the FRP tendons preformed hole passed through for FRP tendons；
Step 2：Installation platform, lifting pier stud section
First the pier stud section below anchored end sleeve is lifted into above cushion cap successively, then penetrated FRP tendons successively from top
The FRP tendons preformed hole of each pier stud section, until after penetrating rectangle cavity, pier stud section of the lifting with anchored end sleeve；
Step 3：By FRP tendons upper end insertion anchored end sleeve, lower end insertion stretching end sleeve, binding material is filled by grout pipe
Enter anchored end sleeve until grout outlet have binding material outflow, by binding material by the mouth pipe that is in the milk pour into stretching end sleeve until
Grout outlet has binding material outflow, and binding material is epoxy resin or acrylic resin；
Step 4：Backing plate is clamped on stretching end sleeve using clamping plate, the bolt on clamping plate need to be tightened, the spirit level on backing plate
Level need to be shown；
Step 5：Jack is placed on backing plate, jack apply thrust by backing plate pass to stretching end sleeve and then
FRP tendons are passed to, the top surface of rectangle cavity provides counter-force support, stretch-draw prestressing force to design load for jack；
Step 6：Stretching end sleeve is fixed on anchor plate using stop nut, takes out jack, unclamps bolt on clamping plate simultaneously
Clamping plate, backing plate are taken out, " ［ " type fluted external surface carries out temporary enclosed；So far the stretch-draw anchor operation knot of prestressed FRP rebar
Beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546511.7A CN107435293B (en) | 2017-07-06 | 2017-07-06 | Pre-stress FRP bar stretching and anchoring device and its construction method for precast assembly bridge pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546511.7A CN107435293B (en) | 2017-07-06 | 2017-07-06 | Pre-stress FRP bar stretching and anchoring device and its construction method for precast assembly bridge pier |
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| CN107435293A true CN107435293A (en) | 2017-12-05 |
| CN107435293B CN107435293B (en) | 2019-02-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029592A (en) * | 2019-04-12 | 2019-07-19 | 长沙理工大学 | A kind of external prestressing FRP tendons stretching and anchoring device |
| CN110258312A (en) * | 2019-07-16 | 2019-09-20 | 中铁二院工程集团有限责任公司 | The structure linkage section and its design method, construction method of segment assembled pier stud |
| CN110821184A (en) * | 2019-12-11 | 2020-02-21 | 柳州欧维姆机械股份有限公司 | Circumferential prestress device and mounting method thereof |
| CN112900246A (en) * | 2021-01-21 | 2021-06-04 | 东南大学 | Novel segment prefabricated assembled pier and assembling method thereof |
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